Plugin Description:

This plugin would revisit the primary theme function 'get_navigation()' for the creation of the navigation of getsimple;

getnavigation() is very comfortable but it is not customizable. The function getnavigation() generate the content with html using the menudata() of the core, and this plugin would offer the right compromise between twice [ getnavigation() and menu_data() ] to create simply a menu that goes in against graphic requirements, specialy for themes that uses framework ( for example Bootstrap )

How it's work??

Like you use getnavigation(), you can call 'customnavigation' in the template.php . If you want print the standard menu generate like getnavigation, you can call simply
customnavigation();

Else you can define the tags to use and the associated classes passing an array() like this:
array ( 'li', 'classli', 'a', 'classa', 'current_li' )
that print lines like this: